diff --git a/src/main/java/org/zalando/nakadi/service/AuthorizationValidator.java b/src/main/java/org/zalando/nakadi/service/AuthorizationValidator.java
index f24c1296df..032218f027 100644
--- a/src/main/java/org/zalando/nakadi/service/AuthorizationValidator.java
+++ b/src/main/java/org/zalando/nakadi/service/AuthorizationValidator.java
@@ -221,11 +221,6 @@ public void validateAuthorization(final Resource oldValue, final Resource newVal
             throw new UnableProcessException(
                     "Changing authorization object to `null` is not possible due to existing one");
         }
-
-        if (oldAuth != null) {
-            return;
-        }
-
         validateAuthorization(newValue);
     }
 }